About us

The person behind this website

My name is Talha Kayani, and I own this website. I developed ti-84calculator.com myself, line by line, and I still maintain it personally. The site began with one online TI-84 calculator for students. The site has grown into a full tools blog, and every calculator and converter on it exists for one reason: I needed the tool myself, I searched for it, and the tools I found were broken, buried under pop-ups, or simply wrong.

That experience repeated itself too many times. A converter gave me a rounded answer with no formula. A calculator hid the result behind three ad screens. Another site copied the same shallow page for fifty tools and tested none of them. I decided to build the tools myself, test every result by hand, and explain each answer in plain words that a real person wrote.

Why I brought Salma Tahira on board

Tools alone do not make a trustworthy website. Readers also need writing that a human planned, checked, and stands behind. I collaborated with Salma Tahira for that reason. Salma works as our content reviewer. She reads every tool page and every article before publication, and she checks the formulas, the figures, and the wording. A page goes live only after her review.

Our goal is simple to state and hard to fake. We are building a 100% human-value blog. Most tool sites today run on generic AI text that nobody verified, published only to earn ad money. This site takes the slower route. A person builds the tool. A person tests the tool. A second person reviews the page. Then the page earns its place here.

About Talha Kayani

I am the founder of Trivexa Digital, my digital marketing company based in Multan, Punjab, Pakistan. Through Trivexa Digital and through my LinkedIn profile, I provide services in SEO, social media marketing, Meta Ads, content writing, content strategy, and personal branding. Businesses hire me to build a stronger online presence with planned marketing and honest content. Over 2,000 people follow my work on LinkedIn, and that community keeps me close to the questions real users ask every day.

That daily contact shaped this website. Clients and students kept asking me for simple tools that worked. The requests became my research list. Four months of work went into researching, building, and testing the tools in this collection before the tools blog opened to readers. I still check reader emails myself, and a correction request reaches me directly, not a support queue.

About Salma Tahira

Salma Tahira is a LinkedIn content writer and ghostwriter based in Multan, Punjab, Pakistan. She helps businesses grow through LinkedIn content, and she writes LinkedIn content, profiles, and copy for coaches, personal brands, and startups. Her top skills are copywriting, content strategy, content writing, ghostwriting, and SEO copywriting. She studied at Allama Iqbal Open University, where she completed Intermediate studies in Computer and Information Sciences and in Art Studies.

Salma writes the way she reviews: in a natural human voice, never from a template. Before she worked with real clients, she tested her writing through a client simulation review and scored 8.75 out of 10. On this website she applies the same standard to every page. She verifies that each formula matches its source, that each number on the page is correct, and that each explanation sounds like a person helping another person.

How we work on every page

  • One person researches the tool and its formula from a trusted source.
  • One person builds the tool and tests the results by hand.
  • Salma reviews the finished page for accuracy and clarity.
  • Each page carries a small set of facts with references to official or trusted sources, so a reader can verify the answer independently.
  • We correct errors in the open. A reader who reports a wrong result gets a fixed tool and a reply.

Your data on this website

I developed this site, and I collect no personal data from you. The calculators run inside your browser, and the numbers you type never reach a server of mine. This website shows ads through Google AdSense, and Google may use cookies to serve those ads. Google explains its cookie use on its own page: How Google uses cookies. Our Privacy Policy describes the full arrangement in plain language.

Contact

Questions, corrections, and tool requests go to contact@ti-84calculator.com. I read every message myself.

Talha Kayani Owner and developer, ti-84calculator.com Founder, Trivexa Digital